Landscape of open source games

While much of the talk covered well-known libraries (SDL, OpenAL), game engines (Ogre, Irrlicht), physics engines (Bullet, Tokamak), and content creation tools (Blender, GIMP),
there were a few surprises. One was how many open source game-creation
systems I found (4, more than the zero I expected). These are Game Editor (2d with export to some mobile devices), Construct (2d, some 3d), Novashell (2d), and Sandbox (3d). Another surprise was the game Yo Frankie! (pictured above), which has very high quality animation and artwork, and was produced using Blender. —Jim Whitehead